Re: [RFC][PATCH 12/12] PM / r8169: Add simplified run-time PM support

Pavel Machek
2010-01-04T21:00:40Z

> > > > Which means it saves 0.6W :-). Measuring power in Wh/h is "interesting".
> > >
> > > You can't save power, you can only save energy. Wh is just an energy unit.
> >
> > Of course we can save power, you just did :-).
> >
> > (And in some cases -- data centers, limited cooling -- you are limited
> > by power, not energy.
>
> But still energy is what you pay for, isn't it?

Energy is what you pay for, but if you eat too much power, data centre
overheats and goes down.

> > You are right that on notebooks, energy is more important.)
>
> You may require less power to run, so if that's what you mean by "saving", then
> I agree. :-)

Yes, that's what I meant by saving :-), and yes, they are very
related.
Pavel
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